Quarterly report pursuant to Section 13 or 15(d)

Capital Structure - Summary of Common Stock Reserved for Future Issuance (Detail)

v3.20.2
Capital Structure - Summary of Common Stock Reserved for Future Issuance (Detail) - shares
Sep. 30, 2020
Dec. 31, 2019
Class of Stock [Line Items]    
Common Stock reserved for future issuance 14,274,286 4,351,873
Two Thousand Fourteen Omnibus IncentivePlan [Member]    
Class of Stock [Line Items]    
Common Stock reserved for future issuance 55,075 101,625
Stock Options [Member]    
Class of Stock [Line Items]    
Common Stock reserved for future issuance 1,864,631 1,216,338
Warrants [Member]    
Class of Stock [Line Items]    
Common Stock reserved for future issuance 12,354,580 3,033,910